# Kurotto Extreme vs Circle Run

The clearest difference is ads: Circle Run at none against Kurotto Extreme's shown. Circle Run also leads on update cadence (every 3 days vs every 22 months) and iOS requirement (10.0 vs 13.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Kurotto Extreme ships an update every 22 months, Circle Run every 3 days. The most recent releases landed on October 5, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Kurotto Extreme | Circle Run |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kurotto-extreme/id1499171663/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 22 months | **Every 3 days** |
| Monetization | Ad-supported | — |
| Size | 22 MB | 95 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christophe Baranger](https://appshunter.io/developer/982794089) | [Omer Bashir](https://appshunter.io/developer/1422493051) |

## What reviewers say

### Kurotto Extreme

[App page](https://appshunter.io/ios/app/kurotto-extreme/id1499171663)

A logic puzzle game originating from Japan with simple rules for hours of engaging challenges. Fill empty cells based on numbered circles indicating continuous black cells, with no time limits and autosave functionality.

**Highlights:** 350+ challenges across 7 difficulty levels, 7 new daily challenges, Autosave progress, No time limits, 2 global leaderboards, Full tutorial

**In-app purchases:** none


### Circle Run

[App page](https://appshunter.io/ios/app/circle-run-helix-ball/id1560785435)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Kurotto Extreme free?

Kurotto Extreme is free to download, with no in-app purchases.

### Is Circle Run free?

Circle Run is free to download, with no in-app purchases.

### Do Kurotto Extreme or Circle Run have ads?

Kurotto Extreme shows ads; Circle Run does not.

### Which is updated more often, Kurotto Extreme or Circle Run?

Kurotto Extreme ships an update every 22 months, and Circle Run every 3 days. Most recently, Kurotto Extreme was updated on October 5, 2026 and Circle Run on October 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*